Adjustable television support system



FIG. 1 is a perspective view of an adjustable television support system, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image thereof; and,

FIG. 4 is a top plan view thereof.

The broken line showing of a television is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an adjustable television support system, as shown and described. 